Network topology

Relationships come from RIS AS_PATH observations; direction represents path position, not a commercial contract or traffic direction.

AS18948

Currently announcedSnapshot awaiting refresh

NYMC2000-ARIN - New York Medical College · NYMC2000-ARIN

Last observed10/1/2026, 00:12:06Open ASN profile →

AS18948 relationship topology

Showing 4 / 4

AS18948New York Medical College

UpstreamDownstreamUncertain relationshipNodes are ordered by observed weight

SELECTED NODEAS54004LIGHTPATH - Cablevision Lightpath LLC

Relationship: Upstream
Observed weight: 288
ASN registration country: United States
Latest RIS data: 10/19/2026, 00:00:00

Open AS54004 profile →

All adjacent autonomous systems

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4 relationships

ASN	Organization	Relationship	ASN registration country	RIS observation start	Latest RIS data	IPv4
AS54004Observed weight 288	LIGHTPATH - Cablevision Lightpath LLC	Upstream	United States	8/19/2019, 00:00:00	10/19/2026, 00:00:00	691
AS46887Observed weight 240	CROWNCASTLE-AS46887 - Crown Castle Fiber LLC	Upstream	United States	8/19/2019, 00:00:00	10/19/2026, 00:00:00	307
AS3754Observed weight 10	NYSERNET3-AS - NYSERNet	Upstream	United States	8/19/2019, 00:00:00	10/19/2026, 00:00:00	10
AS3630Observed weight 2	NYSERNET-BLK - NYSERNet	Upstream	United States	8/19/2019, 00:00:00	10/19/2026, 00:00:00	3

CHA.LA ASN relationship snapshotRelationships are normalized by CHA.LA from collected routing observations and registration context.CHA.LA routing observations · registration context